Stefan Vervoort of WPToy.com has published a new and improved version of his WordPress Theme Development Checklist. This new checklist is provided in PDF form but it’s very easy to print. The checklist covers the following points:

General

Stylesheets

Browser Compatibility

Pages

Styled Everything?

Standard CSS Classes

Validate

WordPress Code

Blog

Elements

This is one of those guides you could put up on the wall to serve as a quick reference.

Excellent timing! Thank you. I’ve spent the weekend reading up on this (mainly in the Codex) for the first time in a long time, since I want to upgrade my own year-old(?) theme. There’s a few points in this PDF that I’d not already covered so that’s useful. Thanks again!